Why petroleum is called black gold?
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Explanation:
The Petroleum is called black gold because when the crude oil is extracted from the soil below, it is black in colour. Petroleum is very expensive like gold. Comparing its high value with gold in terms of properties and moneywise; it is regarded as black gold.
Answered by
1
Answer:
The petroleum is called black gold because
when the crude oil is extracted from the soil below it is black in colour . It is very expensive like gold that's why regarded as Black Gold
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